Starch breaker and grader.



Patented Aug. 13, I90l.

J. M. LYMAN.

STABCH BREAKER AND GBADER.

(Application filed Feb. 15, 1901.)

2 Sheets-Sheet I.

(No Model.)

we pomp: wrrsns cu. momuruo. WASHINGTON, b. c

No. 680,26l. Patented Aug. I3, 190:. J. m. LYMAN.

STARGH BREAKER AND GBADER.

(Appligation filed Feb. 15, 1901.)

(No Model.) 2 Sheets-Sheet 2.

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ATENT Enron.

JOHN M. LYMAN, OF CINCINNATI, OHIO.

STARCH BREAKER ANDGRADER.

SPECIFICATION forming part of Letters Patent No. 680,261, dated August13, 1901. Application filed February 15, 1901. Serial No. 47,526. (Nomodel.)

To aZZ whom, it may concern.-

Be it known that 1, JOHN M. LYMAN, a citi zen of the United States,residing at Cincinnati, in the county of Hamilton and State of Ohio,have invented a certain new and useful Machine for Breaking and GradingStarch and other Brittle and-Fragile Substances,of which the followingis a specification.

My invention relates to an improved method of breaking and gradingstarch and other brittle and fragile substances; and the objects of myinvention are, first, to reduce large lumps of starch and other'brittleand fragile substances to small lumps, making the largest possiblepercentage of lumps of a given size and the smallest possible percentageof pulverized material, and, second, to break and grade the materialwith the same machine without rehandling. I attain these objects by themechanism illustrated in the accompanying drawings, in which- Figure 1is a vertical section of the machine on the line Z Z of Fig. 2. Fig. 2is a top view of the machine. Fig. 3 is an exterior side view. Fig. 4cis a cross-section through the line H H of Fig. 3, and Fig. 5 is anenlarged view of the gear operating the grading-sieves.

Similar letters refer to similar parts through out the views.

The machine is inclosed in the general framework A- Extending lengthwisethrough the machine over horizontal rollers or pulleys B B, andsupported by additional rollers O O O to prevent sagging, slatted beltsF are driven, upon which the substance S to be reduced is deposited.Above the slatted belt F upon the shaft D D D are placed circular steeldisks D D D, revolving so as to travel at the same speed and in the samedirection as the slatted belt F and at different distances above theslatted belt, as indicated in Fig. 1. Beneath the slatted belts arethree sieves G G G, each sieve having larger meshes than the oneimmediately beneath it. These sieves slope toward the openings Q QQ,where the substance is discharged from the machine. These sieves aredriven backward and forward by means of the eccentrics and arms G,

The operation of this machine is as follows: The substance S to bereduced is fed into the machine upon the slatted belt F, which travelstoward the first row of disks and which by the gearing shown in Fig. 3is driven at the same speedas the slatted belt. The substance passesunder the disks and is thereby partially reduced by the splitting actionof the disks,and while the broken parts fall through the slatted parts Fupon the sieve G the remaining larger parts S are carried forward andare treated in the same manner by the remaining series of disks 2 and 3.After falling upon the screens G G G the substance by means of thedifferent-sized meshes is graded into three sizes of lumps and thepulverized material is removed by the conveyor M.

' Having described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

4 1. In a machine for reducing starch or other brittle or fragilesubstances, the combination of a horizontal traveling endless slattedplatform, and a series of shafts located thereabove and carryingcircular cutting-disks, said disks being placed with their edges atprogressively-diminishing distances from the surface of the belt, andmeans for imparting to said disks and said belt a movement in the samedirection, and at the same periph eral speed, so as to split and noteither cut or crush the material.

2. In a machine for reducing starch 'or other brittle orfragile'substance, the combination of a horizontal traveling endlessslatted platform, and a series of shafts located thereabove and carryingcircular cutting-disks, said disks beingplaced with their edges atprogressively-diminishing distances from the surface of the belt, andmeans for imparting to said disks and said belt a movement in the samedirection, and at the same, peripheral speed, so as to split and noteither cut or crush the material with a sieve or sieves placed directlybeneath the belt and receiving the reduced material therefrom.

In witness whereof I have signed my name IOC to this specification inthe presence of two subscribing witnesses.

JOHN M. LYMAN. Witnesses:

CHAS. M. LESLIE, CARRIE B. STUBERT.

